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Unformatted text preview: 256 2) Stop codons have the same first three letters as in humans; the fourth is a wobble position (i.e. stop codons = UAAN, UAGN, UGAN). How many stop codons are in the following DNA sequence? 5 GTACGTGCCTTATTCGATCGATC 3 3 CATGCACG GAAT AAGCTAGCTAG 5 One stop codon 3) The following mRNA sequence encodes the polypeptide His-His-Glu-Lys: CAUGCACGGAAUAAGC A mutation is induced that encodes the polypeptide His-His-STOP. What kind of mutation is responsible? Insertion of U at position 9 or substitution G > U at position 9...
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This note was uploaded on 02/15/2012 for the course PMB 13 taught by Professor Freeling during the Spring '09 term at University of California, Berkeley.
- Spring '09